Amazon offers Prime members the Rubbermaid LunchBlox Medium Lunch Bag in Black Etch for $8.90 with free shipping. That's the lowest price we could find by $2. It's insulated and features a zip closure.

Walmart offers the Rubbermaid Brilliance 10-Piece Food Storage Container Set for $16.98. Opt for in-store pickup to dodge the $5.99 shipping charge. (Amazon and Target charge the same price via free shipping and pickup, respectively.) That's $3 under our April mention and the lowest price we could find by $6. It features two 1.3-cup bowls, two 3.2-cup bowls, and one 9.6 cup bin, each with microwave-safe vented lids.

With orders of $25 or more, Amazon offers the Rubbermaid Lunch Blox Sandwich Set for $6.39 with free shipping. (Target charges the same.) That's $2 under our May mention and the lowest price we could find by $7. Designed to save spaces in lunch bags, these reusable containers are BPA free and dishwasher-, microwave-, and freezer-safe.

Note: This item is part of Amazon's "add-on" program and can only be purchased with orders of $25 or more.